https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65915
Bug ID: 65915 Summary: [6 Regression] FAIL: gcc.target/i386/avx512f-vrndscalepd-2.c (internal compiler error) Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: hjl.tools at gmail dot com CC: tocarip.intel at gmail dot com Target Milestone: --- On x86-64, r222470 caused: [hjl@gnu-ivb-1 gcc]$ ./xgcc -B./ /export/gnu/import/git/gcc-regression/gcc/gcc/testsuite/gcc.target/i386/avx512f-vrndscalepd-2.c -fpic -mcmodel=medium -fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -mavx512f -S /export/gnu/import/git/gcc-regression/gcc/gcc/testsuite/gcc.target/i386/avx512f-vrndscalepd-2.c: In function \u2018test_512\u2019: /export/gnu/import/git/gcc-regression/gcc/gcc/testsuite/gcc.target/i386/avx512f-vrndscalepd-2.c:101:1: error: insn does not satisfy its constraints: (insn 367 366 319 9 (set (reg:V2DF 53 xmm16 [ D.29386 ]) (vec_merge:V2DF (vec_duplicate:V2DF (float:DF (reg:SI 2 cx [orig:96 D.29385 ] [96]))) (reg:V2DF 53 xmm16 [ D.29386 ]) (const_int 1 [0x1]))) 2191 {sse2_cvtsi2sd} (expr_list:REG_DEAD (reg:SI 2 cx [orig:96 D.29385 ] [96]) (nil))) /export/gnu/import/git/gcc-regression/gcc/gcc/testsuite/gcc.target/i386/avx512f-vrndscalepd-2.c:101:1: internal compiler error: in extract_constrain_insn, at recog.c:2244 0xcf4a34 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) ../../../../gcc/gcc/rtl-error.c:110 0xcf4a94 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) ../../../../gcc/gcc/rtl-error.c:121 0xca7059 extract_constrain_insn(rtx_insn*) ../../../../gcc/gcc/recog.c:2244 0xcb5847 copyprop_hardreg_forward_1 ../../../../gcc/gcc/regcprop.c:793 0xcb704b execute ../../../../gcc/gcc/regcprop.c:1289 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions. [hjl@gnu-ivb-1 gcc]$